AEPEX: Decoder Created

python/satyaml/AEPEX.yml

@@ -0,0 +1,20 @@
+name: AEPEX
+norad: 98864
+data:
+  &tlm Telemetry:
+    telemetry: 
+transmitters:
+  9k6 GFSK downlink:
+    frequency: 437.325e+6
+    modulation: GFSK
+    baudrate: 9600
+    framing: AX.25 G3RUH
+    data:
+    - *tlm
+  19k6 FSK downlink:
+    frequency: 437.325e+6
+    modulation: GFSK
+    baudrate: 19200
+    framing: AX.25 G3RUH
+    data:
+    - *tlm

python/telemetry/aepex_70cm.py

@@ -0,0 +1,51 @@
+# Copyright 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 Daniel Estevez <[email protected]>
+# Copyright 2024 The Regents of the University of Colorado
+#
+# This file is part of gr-satellites
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+from datetime import datetime
+from construct import Adapter, BitsInteger, BitStruct, Container, Enum, \
+                      Flag, GreedyBytes, If, Int8ub, Int16ub, Int32ub, \
+                      Padding, RawCopy, Struct, Switch
+from .ax25 import Header
+from ..ccsds import space_packet as ccsds_space_packet
+
+from .aepex_sw_stat import aepex_sw_stat
+
+
+PrimaryHeader = BitStruct(
+	'VERSION' / BitsInteger(3),
+	'TYPE' / BitsInteger(1),
+	'SEC_HDR_FLAG' / BitsInteger(1),
+	'PKT_APID' / BitsInteger(11),
+	'SEQ_FLGS' / BitsInteger(2),
+	'SEQ_CTR' / BitsInteger(14),
+	'PKT_LEN' / BitsInteger(16),
+
+)
+
+SecondaryHeader = BitStruct(
+'SHCOARSE' / BitsInteger(32),
+	'SHFINE' / BitsInteger(16)
+)
+
+
+
+aepex_70cm = Struct(
+	'ax25_header' / Header,
+	'primary_header' / PrimaryHeader,
+	'secondary_header' / If(
+		lambda c: c.primary_header.SEC_HDR_FLAG,
+		SecondaryHeader
+	),
+	'packet' / Switch(
+		lambda c: c.primary_header.PKT_APID,
+		{
+			0x01: aepex_sw_stat
+		}
+	)
+
+)